Mixer faucet



FIG. 1 is a perspective view of a mixer faucet showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a left-side elevation view thereof;

FIG. 6 is a rear elevation view thereof; and,

FIG. 7 is a front elevation view thereof.

The dash-dot-dash broken lines represent the bounds of the claim, while all other broken lines are included for the purpose of illustrating portions of the faucet; the broken lines form no part of the claimed design. 

CLAIM The ornamental design for a mixer faucet, as shown and described. 